You open the box, and pick up the chrome bracelet. No wait, there's an opening? It's a nose ring. You laugh. No way are you going to have this huge thing pierce your septum. You walk over to the mirror to see how it looks anyway. You hold it up to your nostrils. It's way too big. It's better suited for livestock than a human. Suddenly, it jumps in your hand. You scream as it pushes up into your nose and clamps together piercing your nose. Blood gushes down your shirt. You rush to the bathroom. You hold a wet towel to your face while you strip out of your bloody clothes. It was booby trapped. Who? Why? Some secret admirer!
You don't notice that your body is growing hairier and bigger. The pain from the heavy nose ring is subsiding as your skull grows to fit it. You don't notice the nubs on the top of your head thrusting outward. You only keep applying more water to the towel and applying it to your face. You notice that the colors seem to fade into one, different shades of red? The towel must be saturated. You look up and the room is all monochrome too. You stare at the mirror, a bovine face with a nose ring and horns on its head stares back.
You bellow, "Moooooo!"
You turn to dash out of the room, and drop to all fours. Your wide hips and shoulders knock the door from the hinges as you exit. You feel your tail swish against the wall. Tail! You charge for the front door, you need to get help. Your fingers are fusing together and your nails growing into hooves. You fumble at the front door, but you manage to get it open. You dash out on the front porch, and then realize that you are naked on the doorstep. Your underwear had ripped to shreds in the bathroom as you grew into this animal.
"There, there!" says Dirk, "Calm down, I'm here for you. Damn, you look good in that nose ring."
You know Dirk from school. You were sort of friendly competitors. You haven't seen him since you both graduated. You had heard that instead of college, he had to take over the family farm. His family raised cows. Was it a beef farm or a dairy? You don't remember, maybe you never heard.
You look up as he ties a lead to your nose ring, and say, "Moo?"